ToolsMaxxing

Unit converter

Convert length, weight, volume, area, temperature, speed, time and energy, and see every unit at once.

1 Kilometre (km) =
0.62137119
Mile (mi)

All length units

Metre (m)
1,000
Kilometre (km)
1
Centimetre (cm)
100,000
Millimetre (mm)
1,000,000
Mile (mi)
0.62137119
Yard (yd)
1,093.613298
Foot (ft)
3,280.839895
Inch (in)
39,370.07874
Nautical mile
0.5399568

Your files stay on your device

How it works

  1. 1Choose a category such as Length or Temperature.
  2. 2Type the value and choose the From and To units.
  3. 3Read the result, and the full list of every unit in that category.
  4. 4Use Swap units to go the other way.

What the options do

Categories
Length, weight and mass, volume, area, temperature, speed, time and energy.
Swap units
Exchanges From and To so you can convert back.
All units list
Shows your value in every unit of the category, handy when you do not yet know which one you need.

Privacy

Everything is calculated in your browser. Nothing you enter is sent to a server.

Questions people ask

Are US and UK gallons the same?

No. A US gallon is 3.785 litres and a UK (imperial) gallon is 4.546 litres. Both are listed separately. Pints, quarts and cups here are US measures.

How accurate are the conversions?

They use the exact definitions, such as 1 inch = 25.4 mm and 1 lb = 0.45359237 kg, and results show up to ten significant digits.

How is temperature converted?

Through Celsius, with F = C x 9/5 + 32 and K = C + 273.15. Temperatures are offsets, not ratios, so they need this special handling.

What is a tola?

A traditional South Asian unit of weight used for gold and silver, set here to 11.6638 grams, the Indian standard. Some regions use a slightly different value.

Why are months and years approximate?

Months and years vary in length. Here a month is 30.44 days and a year is 365.25 days. Use the Date difference tool for exact calendar spans.

Related tools